Core orienting device



June 81943. G. FfFERMlER coRE ORIENTING DEVICE Filed Jan; 8. 1940 Patented June 8, 1943 2,321,474 conn oRrEN'rmG nnvroi:

George F. Fermer, Houston, Tex., asslor to Reed Roller Bit Company, Houston, rEen., a corporation of Texas Application `anuary 8, 1940, Serial No. 312,82@

(Cl. 255l.4)

3 Claims.

This invention relates to core marking devices to so mark the core that, when it has been extracted, it may be properly oriented for subterranean survey purposes.

In the conventional method of core drilling, the core is cut and extracted without means of complete orientation although sometimes an acid bottle or other means is used to determine the be taken, and even then the conguration of the strata between wells must be estimated, with considerable percentage of error. I am aware that various core devices have been developed to increase the accuracy of data gathered thereholes t8. The prongs 34 consist oi plungei|` like parts having marking points at their lower or protruding ends .and piston-like parts formed on their upper ends. These piston-like parts serve to prevent the prongs from dropping out through the bushings di and serve as guides for the prongs within the holes d8. A common compartment or interconnecting passageway @9 serves to interconnect the holes 68, and the holes 68 and compartment or passagewayy d@ are lledwith a resilient or fluent substance 5o, such, for example, as soft rubber.

This provides resiliency for the prongs, and

provides for each oi them ayielding support so from but, as far as I am aware, no one has prog duced a means for orienting a core so that the exact slope of the strata can be obtained, similar to that embodied in my'invention;

The primary object of my invention is to increase the accuracy of subterranean exploration by core drilling. p Y

A further object is a positive means of orienting a core with respect `to the ground from which itis taken.

Other objects and features may become evident from the following disclosure when taken which:

Fig. 1 is a longitudinal cross-section of a .core marking head embodying my invention; g Fig. 2 is a bottom `plan view ofxizhe device shown in Fig. l,

It is to be understood that the core marking device shown in the drawing will serve to mark the upper end of a core and for this purpose it will be mounted on some suitable means which will enable the operator to know or to determine the orientation of the marking device when it irst contacts the core. Such means are well known. For the purpose of such mounting, I have shown the head as having a body 30 with a, shank 3| having slots 32 therein to receive pins or bolts on the part on which the head is to be mounted. It will be understood, however, that'the headl 30 may be provided with any other desired means for mounting it.

In the embodiment shownin the drawing, the marking prongs 34 are held by means of bushings d'l threaded intol thedownwardly opening in connection with the following drawing, in g as to accommodate any unevenness in the surface contacted. Furthermore, if one prong is forced inwardly prior to any other, the compression of the body of material 5t will tend to simultaneously force outwardly the other prong or prongs.

By the meansdescribed above, I have produced a devicel which gives a positive means of orientling a core. I do not wish to be limited to the specific embodiment set out herein, but only by the scope of the appended claims.

I claim:

1. In a device of the class described, a casing, said casing having channels leading from the lower end thereof and communicating with a common channel within said casing, a prong in each of said channels movable vertically therein and iluent material lling all of said channels, whereby said prongs may adjust themselves to unevenness in the surface of the formation encountered.

2. In a device of the character described, a core marking head having a plurality of openings extending from its outer face toward its in ner end interconnected inwardly of their outer ends, a pin for each of said openings, each pin having a part projecting from said head and a A plunger-like part slidably carried in the corresponding opening in the head, and a. substantially noncompressible fluent material substantially lling said openings and the connections there- 1 between inwardly from said pins, whereby when one of said pins is moved inwardly into its opening another of said pins will be moved outwardly.

3. In v'a device of the character described, a core marking head having `a plurality of guideways thereima marking pin slidabiy mounted in each of said guideways and having parts projecting from said head, and i'orce transmitting means interconnecting said pins ior causing outward movement of one of said pins upon inward movement of another thereof.

GEORGE F. naar/UER. 

